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<div class="header">
  <div class="headertitle"><div class="title">gtest-matchers.h</div></div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">// Copyright 2007, Google Inc.</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">// All rights reserved.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment">//</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment">// Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment">// modification, are permitted provided that the following conditions are</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment">// met:</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment">//</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment">//     * Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment">// notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment">//     * Redistributions in binary form must reproduce the above</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment">// copyright notice, this list of conditions and the following disclaimer</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment">// in the documentation and/or other materials provided with the</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment">// distribution.</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment">//     * Neither the name of Google Inc. nor the names of its</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment">// contributors may be used to endorse or promote products derived from</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment">// this software without specific prior written permission.</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment">//</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment">// &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment">// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment">// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment">// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment">// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment">// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="comment">// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="comment">// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="comment">// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="comment">// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span> </div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="comment">// The Google C++ Testing and Mocking Framework (Google Test)</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment">//</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment">// This file implements just enough of the matcher interface to allow</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="comment">// EXPECT_DEATH and friends to accept a matcher argument.</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="comment">// IWYU pragma: private, include &quot;gtest/gtest.h&quot;</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="comment">// IWYU pragma: friend gtest/.*</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="comment">// IWYU pragma: friend gmock/.*</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span> </div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="preprocessor">#ifndef GOOGLETEST_INCLUDE_GTEST_GTEST_MATCHERS_H_</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="preprocessor">#define GOOGLETEST_INCLUDE_GTEST_GTEST_MATCHERS_H_</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="preprocessor">#include &lt;atomic&gt;</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="preprocessor">#include &lt;memory&gt;</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="preprocessor">#include &lt;ostream&gt;</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="preprocessor">#include &quot;gtest/gtest-printers.h&quot;</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="preprocessor">#include &quot;gtest/internal/gtest-internal.h&quot;</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="preprocessor">#include &quot;gtest/internal/gtest-port.h&quot;</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="comment">// MSVC warning C5046 is new as of VS2017 version 15.8.</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="preprocessor">#if defined(_MSC_VER) &amp;&amp; _MSC_VER &gt;= 1915</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="preprocessor">#define GTEST_MAYBE_5046_ 5046</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="preprocessor">#define GTEST_MAYBE_5046_</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>GTEST_DISABLE_MSC_WARNINGS_PUSH_(</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>    4251 GTEST_MAYBE_5046_ <span class="comment">/* class A needs to have dll-interface to be used by</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="comment">                              clients of class B */</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>    <span class="comment">/* Symbol involving type with internal linkage not defined */</span>)</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span> </div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="keyword">namespace </span>testing {</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="comment">// To implement a matcher Foo for type T, define:</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span><span class="comment">//   1. a class FooMatcherMatcher that implements the matcher interface:</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span><span class="comment">//     using is_gtest_matcher = void;</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span><span class="comment">//     bool MatchAndExplain(const T&amp;, std::ostream*);</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="comment">//       (MatchResultListener* can also be used instead of std::ostream*)</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span><span class="comment">//     void DescribeTo(std::ostream*);</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span><span class="comment">//     void DescribeNegationTo(std::ostream*);</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span><span class="comment">//</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span><span class="comment">//   2. a factory function that creates a Matcher&lt;T&gt; object from a</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span><span class="comment">//      FooMatcherMatcher.</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span> </div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="keyword">class </span>MatchResultListener {</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>  <span class="comment">// Creates a listener object with the given underlying ostream.  The</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>  <span class="comment">// listener does not own the ostream, and does not dereference it</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>  <span class="comment">// in the constructor or destructor.</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>  <span class="keyword">explicit</span> MatchResultListener(::std::ostream* os) : stream_(os) {}</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>  <span class="keyword">virtual</span> ~MatchResultListener() = 0;  <span class="comment">// Makes this class abstract.</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span> </div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span>  <span class="comment">// Streams x to the underlying ostream; does nothing if the ostream</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>  <span class="comment">// is NULL.</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>  MatchResultListener&amp; operator&lt;&lt;(<span class="keyword">const</span> T&amp; x) {</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>    <span class="keywordflow">if</span> (stream_ != <span class="keyword">nullptr</span>) *stream_ &lt;&lt; x;</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>    <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>  }</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span> </div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span>  <span class="comment">// Returns the underlying ostream.</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>  ::std::ostream* stream() { <span class="keywordflow">return</span> stream_; }</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span> </div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>  <span class="comment">// Returns true if and only if the listener is interested in an explanation</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>  <span class="comment">// of the match result.  A matcher&#39;s MatchAndExplain() method can use</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>  <span class="comment">// this information to avoid generating the explanation when no one</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>  <span class="comment">// intends to hear it.</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>  <span class="keywordtype">bool</span> IsInterested()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> stream_ != <span class="keyword">nullptr</span>; }</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>  ::std::ostream* <span class="keyword">const</span> stream_;</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span> </div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>  MatchResultListener(<span class="keyword">const</span> MatchResultListener&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>  MatchResultListener&amp; operator=(<span class="keyword">const</span> MatchResultListener&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>};</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span> </div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="keyword">inline</span> MatchResultListener::~MatchResultListener() {}</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span> </div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="comment">// An instance of a subclass of this knows how to describe itself as a</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span><span class="comment">// matcher.</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="keyword">class </span>GTEST_API_ MatcherDescriberInterface {</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span>  <span class="keyword">virtual</span> ~MatcherDescriberInterface() {}</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span> </div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>  <span class="comment">// Describes this matcher to an ostream.  The function should print</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span>  <span class="comment">// a verb phrase that describes the property a value matching this</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>  <span class="comment">// matcher should have.  The subject of the verb phrase is the value</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>  <span class="comment">// being matched.  For example, the DescribeTo() method of the Gt(7)</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>  <span class="comment">// matcher prints &quot;is greater than 7&quot;.</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> DescribeTo(::std::ostream* os) <span class="keyword">const</span> = 0;</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span>  <span class="comment">// Describes the negation of this matcher to an ostream.  For</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span>  <span class="comment">// example, if the description of this matcher is &quot;is greater than</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>  <span class="comment">// 7&quot;, the negated description could be &quot;is not greater than 7&quot;.</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span>  <span class="comment">// You are not required to override this when implementing</span></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>  <span class="comment">// MatcherInterface, but it is highly advised so that your matcher</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span>  <span class="comment">// can produce good error messages.</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> DescribeNegationTo(::std::ostream* os)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span>    *os &lt;&lt; <span class="stringliteral">&quot;not (&quot;</span>;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span>    DescribeTo(os);</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span>    *os &lt;&lt; <span class="stringliteral">&quot;)&quot;</span>;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>  }</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>};</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span> </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span><span class="comment">// The implementation of a matcher.</span></div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span><span class="keyword">class </span>MatcherInterface : <span class="keyword">public</span> MatcherDescriberInterface {</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span>  <span class="comment">// Returns true if and only if the matcher matches x; also explains the</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span>  <span class="comment">// match result to &#39;listener&#39; if necessary (see the next paragraph), in</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span>  <span class="comment">// the form of a non-restrictive relative clause (&quot;which ...&quot;,</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span>  <span class="comment">// &quot;whose ...&quot;, etc) that describes x.  For example, the</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span>  <span class="comment">// MatchAndExplain() method of the Pointee(...) matcher should</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span>  <span class="comment">// generate an explanation like &quot;which points to ...&quot;.</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>  <span class="comment">//</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span>  <span class="comment">// Implementations of MatchAndExplain() should add an explanation of</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>  <span class="comment">// the match result *if and only if* they can provide additional</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>  <span class="comment">// information that&#39;s not already present (or not obvious) in the</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span>  <span class="comment">// print-out of x and the matcher&#39;s description.  Whether the match</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>  <span class="comment">// succeeds is not a factor in deciding whether an explanation is</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span>  <span class="comment">// needed, as sometimes the caller needs to print a failure message</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span>  <span class="comment">// when the match succeeds (e.g. when the matcher is used inside</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span>  <span class="comment">// Not()).</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>  <span class="comment">//</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>  <span class="comment">// For example, a &quot;has at least 10 elements&quot; matcher should explain</span></div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>  <span class="comment">// what the actual element count is, regardless of the match result,</span></div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>  <span class="comment">// as it is useful information to the reader; on the other hand, an</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>  <span class="comment">// &quot;is empty&quot; matcher probably only needs to explain what the actual</span></div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>  <span class="comment">// size is when the match fails, as it&#39;s redundant to say that the</span></div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>  <span class="comment">// size is 0 when the value is already known to be empty.</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>  <span class="comment">//</span></div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>  <span class="comment">// You should override this method when defining a new matcher.</span></div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>  <span class="comment">//</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>  <span class="comment">// It&#39;s the responsibility of the caller (Google Test) to guarantee</span></div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>  <span class="comment">// that &#39;listener&#39; is not NULL.  This helps to simplify a matcher&#39;s</span></div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>  <span class="comment">// implementation when it doesn&#39;t care about the performance, as it</span></div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>  <span class="comment">// can talk to &#39;listener&#39; without checking its validity first.</span></div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>  <span class="comment">// However, in order to implement dummy listeners efficiently,</span></div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span>  <span class="comment">// listener-&gt;stream() may be NULL.</span></div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> MatchAndExplain(T x, MatchResultListener* listener) <span class="keyword">const</span> = 0;</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span> </div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>  <span class="comment">// Inherits these methods from MatcherDescriberInterface:</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>  <span class="comment">//   virtual void DescribeTo(::std::ostream* os) const = 0;</span></div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>  <span class="comment">//   virtual void DescribeNegationTo(::std::ostream* os) const;</span></div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>};</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span> </div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span><span class="keyword">namespace </span>internal {</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span> </div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span><span class="keyword">struct </span>AnyEq {</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> A, <span class="keyword">typename</span> B&gt;</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>  <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> A&amp; a, <span class="keyword">const</span> B&amp; b)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>    <span class="keywordflow">return</span> a == b;</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>  }</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span>};</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span><span class="keyword">struct </span>AnyNe {</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> A, <span class="keyword">typename</span> B&gt;</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span>  <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> A&amp; a, <span class="keyword">const</span> B&amp; b)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span>    <span class="keywordflow">return</span> a != b;</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>  }</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>};</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span><span class="keyword">struct </span>AnyLt {</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> A, <span class="keyword">typename</span> B&gt;</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>  <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> A&amp; a, <span class="keyword">const</span> B&amp; b)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>    <span class="keywordflow">return</span> a &lt; b;</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span>  }</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span>};</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span><span class="keyword">struct </span>AnyGt {</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> A, <span class="keyword">typename</span> B&gt;</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>  <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> A&amp; a, <span class="keyword">const</span> B&amp; b)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span>    <span class="keywordflow">return</span> a &gt; b;</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>  }</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>};</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span><span class="keyword">struct </span>AnyLe {</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> A, <span class="keyword">typename</span> B&gt;</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>  <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> A&amp; a, <span class="keyword">const</span> B&amp; b)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>    <span class="keywordflow">return</span> a &lt;= b;</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span>  }</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span>};</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span><span class="keyword">struct </span>AnyGe {</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> A, <span class="keyword">typename</span> B&gt;</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>  <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> A&amp; a, <span class="keyword">const</span> B&amp; b)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>    <span class="keywordflow">return</span> a &gt;= b;</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>  }</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span>};</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span> </div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span><span class="comment">// A match result listener that ignores the explanation.</span></div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span><span class="keyword">class </span>DummyMatchResultListener : <span class="keyword">public</span> MatchResultListener {</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>  DummyMatchResultListener() : MatchResultListener(nullptr) {}</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span> </div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>  DummyMatchResultListener(<span class="keyword">const</span> DummyMatchResultListener&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>  DummyMatchResultListener&amp; operator=(<span class="keyword">const</span> DummyMatchResultListener&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span>};</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span> </div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span><span class="comment">// A match result listener that forwards the explanation to a given</span></div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span><span class="comment">// ostream.  The difference between this and MatchResultListener is</span></div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span><span class="comment">// that the former is concrete.</span></div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span><span class="keyword">class </span>StreamMatchResultListener : <span class="keyword">public</span> MatchResultListener {</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span>  <span class="keyword">explicit</span> StreamMatchResultListener(::std::ostream* os)</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span>      : MatchResultListener(os) {}</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span> </div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span>  StreamMatchResultListener(<span class="keyword">const</span> StreamMatchResultListener&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span>  StreamMatchResultListener&amp; operator=(<span class="keyword">const</span> StreamMatchResultListener&amp;) =</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span>      <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span>};</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span> </div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span><span class="keyword">struct </span>SharedPayloadBase {</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span>  std::atomic&lt;int&gt; ref{1};</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span>  <span class="keywordtype">void</span> Ref() { ref.fetch_add(1, std::memory_order_relaxed); }</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span>  <span class="keywordtype">bool</span> Unref() { <span class="keywordflow">return</span> ref.fetch_sub(1, std::memory_order_acq_rel) == 1; }</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span>};</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span> </div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span><span class="keyword">struct </span>SharedPayload : SharedPayloadBase {</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span>  <span class="keyword">explicit</span> SharedPayload(<span class="keyword">const</span> T&amp; v) : value(v) {}</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span>  <span class="keyword">explicit</span> SharedPayload(T&amp;&amp; v) : value(std::move(v)) {}</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span> </div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> Destroy(SharedPayloadBase* shared) {</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span>    <span class="keyword">delete</span> <span class="keyword">static_cast&lt;</span>SharedPayload*<span class="keyword">&gt;</span>(shared);</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span>  }</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span> </div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span>  T value;</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span>};</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span> </div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span><span class="comment">// An internal class for implementing Matcher&lt;T&gt;, which will derive</span></div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span><span class="comment">// from it.  We put functionalities common to all Matcher&lt;T&gt;</span></div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span><span class="comment">// specializations here to avoid code duplication.</span></div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span><span class="keyword">class </span>MatcherBase : <span class="keyword">private</span> MatcherDescriberInterface {</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span>  <span class="comment">// Returns true if and only if the matcher matches x; also explains the</span></div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>  <span class="comment">// match result to &#39;listener&#39;.</span></div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>  <span class="keywordtype">bool</span> MatchAndExplain(<span class="keyword">const</span> T&amp; x, MatchResultListener* listener)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span>    GTEST_CHECK_(vtable_ != <span class="keyword">nullptr</span>);</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span>    <span class="keywordflow">return</span> vtable_-&gt;match_and_explain(*<span class="keyword">this</span>, x, listener);</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>  }</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span> </div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>  <span class="comment">// Returns true if and only if this matcher matches x.</span></div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span>  <span class="keywordtype">bool</span> Matches(<span class="keyword">const</span> T&amp; x)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span>    DummyMatchResultListener dummy;</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>    <span class="keywordflow">return</span> MatchAndExplain(x, &amp;dummy);</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>  }</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span> </div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span>  <span class="comment">// Describes this matcher to an ostream.</span></div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span>  <span class="keywordtype">void</span> DescribeTo(::std::ostream* os) <span class="keyword">const</span> <span class="keyword">final</span> {</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span>    GTEST_CHECK_(vtable_ != <span class="keyword">nullptr</span>);</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span>    vtable_-&gt;describe(*<span class="keyword">this</span>, os, <span class="keyword">false</span>);</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>  }</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span> </div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>  <span class="comment">// Describes the negation of this matcher to an ostream.</span></div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span>  <span class="keywordtype">void</span> DescribeNegationTo(::std::ostream* os) <span class="keyword">const</span> <span class="keyword">final</span> {</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span>    GTEST_CHECK_(vtable_ != <span class="keyword">nullptr</span>);</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span>    vtable_-&gt;describe(*<span class="keyword">this</span>, os, <span class="keyword">true</span>);</div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span>  }</div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span> </div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span>  <span class="comment">// Explains why x matches, or doesn&#39;t match, the matcher.</span></div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span>  <span class="keywordtype">void</span> ExplainMatchResultTo(<span class="keyword">const</span> T&amp; x, ::std::ostream* os)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span>    StreamMatchResultListener listener(os);</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span>    MatchAndExplain(x, &amp;listener);</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span>  }</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span> </div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span>  <span class="comment">// Returns the describer for this matcher object; retains ownership</span></div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span>  <span class="comment">// of the describer, which is only guaranteed to be alive when</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span>  <span class="comment">// this matcher object is alive.</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span>  <span class="keyword">const</span> MatcherDescriberInterface* GetDescriber()<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span>    <span class="keywordflow">if</span> (vtable_ == <span class="keyword">nullptr</span>) <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span>    <span class="keywordflow">return</span> vtable_-&gt;get_describer(*<span class="keyword">this</span>);</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span>  }</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span> </div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span> <span class="keyword">protected</span>:</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span>  MatcherBase() : vtable_(nullptr), buffer_() {}</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span> </div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span>  <span class="comment">// Constructs a matcher from its implementation.</span></div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> U&gt;</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span>  <span class="keyword">explicit</span> MatcherBase(<span class="keyword">const</span> MatcherInterface&lt;U&gt;* impl)</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span>      : vtable_(nullptr), buffer_() {</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span>    Init(impl);</div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span>  }</div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span> </div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> M, <span class="keyword">typename</span> = <span class="keyword">typename</span> std::remove_reference&lt;</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span>                            M&gt;::type::is_gtest_matcher&gt;</div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span>  MatcherBase(M&amp;&amp; m) : vtable_(nullptr), buffer_() {  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span>    Init(std::forward&lt;M&gt;(m));</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span>  }</div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span> </div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span>  MatcherBase(<span class="keyword">const</span> MatcherBase&amp; other)</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span>      : vtable_(other.vtable_), buffer_(other.buffer_) {</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span>    <span class="keywordflow">if</span> (IsShared()) buffer_.shared-&gt;Ref();</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span>  }</div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span> </div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span>  MatcherBase&amp; operator=(<span class="keyword">const</span> MatcherBase&amp; other) {</div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span>    <span class="keywordflow">if</span> (<span class="keyword">this</span> == &amp;other) <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span>    Destroy();</div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span>    vtable_ = other.vtable_;</div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span>    buffer_ = other.buffer_;</div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span>    <span class="keywordflow">if</span> (IsShared()) buffer_.shared-&gt;Ref();</div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno">  332</span>    <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span>  }</div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span> </div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span>  MatcherBase(MatcherBase&amp;&amp; other)</div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span>      : vtable_(other.vtable_), buffer_(other.buffer_) {</div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span>    other.vtable_ = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span>  }</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span> </div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span>  MatcherBase&amp; operator=(MatcherBase&amp;&amp; other) {</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span>    <span class="keywordflow">if</span> (<span class="keyword">this</span> == &amp;other) <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span>    Destroy();</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span>    vtable_ = other.vtable_;</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span>    buffer_ = other.buffer_;</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span>    other.vtable_ = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span>    <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno">  347</span>  }</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span> </div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span>  ~MatcherBase()<span class="keyword"> override </span>{ Destroy(); }</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno">  350</span> </div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span>  <span class="keyword">struct </span>VTable {</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span>    bool (*match_and_explain)(<span class="keyword">const</span> MatcherBase&amp;, <span class="keyword">const</span> T&amp;,</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span>                              MatchResultListener*);</div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span>    void (*describe)(<span class="keyword">const</span> MatcherBase&amp;, std::ostream*, <span class="keywordtype">bool</span> negation);</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno">  356</span>    <span class="comment">// Returns the captured object if it implements the interface, otherwise</span></div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span>    <span class="comment">// returns the MatcherBase itself.</span></div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span>    <span class="keyword">const</span> MatcherDescriberInterface* (*get_describer)(<span class="keyword">const</span> MatcherBase&amp;);</div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span>    <span class="comment">// Called on shared instances when the reference count reaches 0.</span></div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span>    void (*shared_destroy)(SharedPayloadBase*);</div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span>  };</div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span> </div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span>  <span class="keywordtype">bool</span> IsShared()<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span>    <span class="keywordflow">return</span> vtable_ != <span class="keyword">nullptr</span> &amp;&amp; vtable_-&gt;shared_destroy != <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span>  }</div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span> </div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span>  <span class="comment">// If the implementation uses a listener, call that.</span></div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span>  <span class="keyword">static</span> <span class="keyword">auto</span> MatchAndExplainImpl(<span class="keyword">const</span> MatcherBase&amp; m, <span class="keyword">const</span> T&amp; value,</div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span>                                  MatchResultListener* listener)</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span>      -&gt; <span class="keyword">decltype</span>(P::Get(m).MatchAndExplain(value, listener-&gt;stream())) {</div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span>    <span class="keywordflow">return</span> P::Get(m).MatchAndExplain(value, listener-&gt;stream());</div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span>  }</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span> </div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span>  <span class="keyword">static</span> <span class="keyword">auto</span> MatchAndExplainImpl(<span class="keyword">const</span> MatcherBase&amp; m, <span class="keyword">const</span> T&amp; value,</div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span>                                  MatchResultListener* listener)</div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span>      -&gt; <span class="keyword">decltype</span>(P::Get(m).MatchAndExplain(value, listener)) {</div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span>    <span class="keywordflow">return</span> P::Get(m).MatchAndExplain(value, listener);</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span>  }</div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span> </div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> DescribeImpl(<span class="keyword">const</span> MatcherBase&amp; m, std::ostream* os,</div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno">  384</span>                           <span class="keywordtype">bool</span> negation) {</div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span>    <span class="keywordflow">if</span> (negation) {</div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span>      P::Get(m).DescribeNegationTo(os);</div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span>    } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span>      P::Get(m).DescribeTo(os);</div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span>    }</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span>  }</div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span> </div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span>  <span class="keyword">static</span> <span class="keyword">const</span> MatcherDescriberInterface* GetDescriberImpl(</div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno">  394</span>      <span class="keyword">const</span> MatcherBase&amp; m) {</div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno">  395</span>    <span class="comment">// If the impl is a MatcherDescriberInterface, then return it.</span></div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno">  396</span>    <span class="comment">// Otherwise use MatcherBase itself.</span></div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno">  397</span>    <span class="comment">// This allows us to implement the GetDescriber() function without support</span></div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno">  398</span>    <span class="comment">// from the impl, but some users really want to get their impl back when</span></div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span>    <span class="comment">// they call GetDescriber().</span></div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno">  400</span>    <span class="comment">// We use std::get on a tuple as a workaround of not having `if constexpr`.</span></div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span>    <span class="keywordflow">return</span> std::get&lt;(</div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span>        std::is_convertible&lt;<span class="keyword">decltype</span>(&amp;P::Get(m)),</div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span>                            <span class="keyword">const</span> MatcherDescriberInterface*&gt;::value</div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno">  404</span>            ? 1</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno">  405</span>            : 0)&gt;(std::make_tuple(&amp;m, &amp;P::Get(m)));</div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span>  }</div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span> </div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno">  408</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span>  <span class="keyword">const</span> VTable* GetVTable() {</div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span>    <span class="keyword">static</span> <span class="keyword">constexpr</span> VTable kVTable = {&amp;MatchAndExplainImpl&lt;P&gt;,</div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span>                                       &amp;DescribeImpl&lt;P&gt;, &amp;GetDescriberImpl&lt;P&gt;,</div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span>                                       P::shared_destroy};</div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span>    <span class="keywordflow">return</span> &amp;kVTable;</div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno">  414</span>  }</div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span> </div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span>  <span class="keyword">union </span>Buffer {</div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span>    <span class="comment">// Add some types to give Buffer some common alignment/size use cases.</span></div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span>    <span class="keywordtype">void</span>* ptr;</div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno">  419</span>    <span class="keywordtype">double</span> d;</div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno">  420</span>    int64_t i;</div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno">  421</span>    <span class="comment">// And add one for the out-of-line cases.</span></div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno">  422</span>    SharedPayloadBase* shared;</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span>  };</div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span> </div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno">  425</span>  <span class="keywordtype">void</span> Destroy() {</div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span>    <span class="keywordflow">if</span> (IsShared() &amp;&amp; buffer_.shared-&gt;Unref()) {</div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span>      vtable_-&gt;shared_destroy(buffer_.shared);</div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno">  428</span>    }</div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno">  429</span>  }</div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno">  430</span> </div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno">  431</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> M&gt;</div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno">  432</span>  <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> IsInlined() {</div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno">  433</span>    <span class="keywordflow">return</span> <span class="keyword">sizeof</span>(M) &lt;= <span class="keyword">sizeof</span>(Buffer) &amp;&amp; <span class="keyword">alignof</span>(M) &lt;= <span class="keyword">alignof</span>(Buffer) &amp;&amp;</div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno">  434</span>           std::is_trivially_copy_constructible&lt;M&gt;::value &amp;&amp;</div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno">  435</span>           std::is_trivially_destructible&lt;M&gt;::value;</div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno">  436</span>  }</div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno">  437</span> </div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno">  438</span>  template &lt;typename M, bool = MatcherBase::IsInlined&lt;M&gt;()&gt;</div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno">  439</span>  <span class="keyword">struct </span>ValuePolicy {</div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno">  440</span>    <span class="keyword">static</span> <span class="keyword">const</span> M&amp; Get(<span class="keyword">const</span> MatcherBase&amp; m) {</div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno">  441</span>      <span class="comment">// When inlined along with Init, need to be explicit to avoid violating</span></div>
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno">  442</span>      <span class="comment">// strict aliasing rules.</span></div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno">  443</span>      <span class="keyword">const</span> M* ptr =</div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno">  444</span>          <span class="keyword">static_cast&lt;</span><span class="keyword">const </span>M*<span class="keyword">&gt;</span>(<span class="keyword">static_cast&lt;</span><span class="keyword">const </span><span class="keywordtype">void</span>*<span class="keyword">&gt;</span>(&amp;m.buffer_));</div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno">  445</span>      <span class="keywordflow">return</span> *ptr;</div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno">  446</span>    }</div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno">  447</span>    <span class="keyword">static</span> <span class="keywordtype">void</span> Init(MatcherBase&amp; m, M impl) {</div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno">  448</span>      ::new (<span class="keyword">static_cast&lt;</span><span class="keywordtype">void</span>*<span class="keyword">&gt;</span>(&amp;m.buffer_)) M(impl);</div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno">  449</span>    }</div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno">  450</span>    static constexpr auto shared_destroy = <span class="keywordtype">nullptr</span>;</div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno">  451</span>  };</div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno">  452</span> </div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno">  453</span>  template &lt;typename M&gt;</div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno">  454</span>  struct ValuePolicy&lt;M, false&gt; {</div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno">  455</span>    <span class="keyword">using </span>Shared = SharedPayload&lt;M&gt;;</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno">  456</span>    <span class="keyword">static</span> <span class="keyword">const</span> M&amp; Get(<span class="keyword">const</span> MatcherBase&amp; m) {</div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno">  457</span>      <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>Shared*<span class="keyword">&gt;</span>(m.buffer_.shared)-&gt;value;</div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno">  458</span>    }</div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno">  459</span>    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Arg&gt;</div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno">  460</span>    <span class="keyword">static</span> <span class="keywordtype">void</span> Init(MatcherBase&amp; m, Arg&amp;&amp; arg) {</div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno">  461</span>      m.buffer_.shared = <span class="keyword">new</span> Shared(std::forward&lt;Arg&gt;(arg));</div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno">  462</span>    }</div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno">  463</span>    <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> shared_destroy = &amp;Shared::Destroy;</div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno">  464</span>  };</div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno">  465</span> </div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno">  466</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> U, <span class="keywordtype">bool</span> B&gt;</div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno">  467</span>  <span class="keyword">struct </span>ValuePolicy&lt;const MatcherInterface&lt;U&gt;*, B&gt; {</div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno">  468</span>    <span class="keyword">using </span>M = <span class="keyword">const</span> MatcherInterface&lt;U&gt;;</div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno">  469</span>    <span class="keyword">using </span>Shared = SharedPayload&lt;std::unique_ptr&lt;M&gt;&gt;;</div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno">  470</span>    <span class="keyword">static</span> <span class="keyword">const</span> M&amp; Get(<span class="keyword">const</span> MatcherBase&amp; m) {</div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno">  471</span>      <span class="keywordflow">return</span> *<span class="keyword">static_cast&lt;</span>Shared*<span class="keyword">&gt;</span>(m.buffer_.shared)-&gt;value;</div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno">  472</span>    }</div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno">  473</span>    <span class="keyword">static</span> <span class="keywordtype">void</span> Init(MatcherBase&amp; m, M* impl) {</div>
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno">  474</span>      m.buffer_.shared = <span class="keyword">new</span> Shared(std::unique_ptr&lt;M&gt;(impl));</div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno">  475</span>    }</div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno">  476</span> </div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno">  477</span>    <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> shared_destroy = &amp;Shared::Destroy;</div>
<div class="line"><a id="l00478" name="l00478"></a><span class="lineno">  478</span>  };</div>
<div class="line"><a id="l00479" name="l00479"></a><span class="lineno">  479</span> </div>
<div class="line"><a id="l00480" name="l00480"></a><span class="lineno">  480</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> M&gt;</div>
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno">  481</span>  <span class="keywordtype">void</span> Init(M&amp;&amp; m) {</div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno">  482</span>    <span class="keyword">using </span>MM = <span class="keyword">typename</span> std::decay&lt;M&gt;::type;</div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno">  483</span>    <span class="keyword">using </span>Policy = ValuePolicy&lt;MM&gt;;</div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno">  484</span>    vtable_ = GetVTable&lt;Policy&gt;();</div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno">  485</span>    Policy::Init(*<span class="keyword">this</span>, std::forward&lt;M&gt;(m));</div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno">  486</span>  }</div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno">  487</span> </div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno">  488</span>  <span class="keyword">const</span> VTable* vtable_;</div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno">  489</span>  Buffer buffer_;</div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno">  490</span>};</div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno">  491</span> </div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno">  492</span>}  <span class="comment">// namespace internal</span></div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno">  493</span> </div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno">  494</span><span class="comment">// A Matcher&lt;T&gt; is a copyable and IMMUTABLE (except by assignment)</span></div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno">  495</span><span class="comment">// object that can check whether a value of type T matches.  The</span></div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno">  496</span><span class="comment">// implementation of Matcher&lt;T&gt; is just a std::shared_ptr to const</span></div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno">  497</span><span class="comment">// MatcherInterface&lt;T&gt;.  Don&#39;t inherit from Matcher!</span></div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno">  498</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno">  499</span><span class="keyword">class </span>Matcher : <span class="keyword">public</span> internal::MatcherBase&lt;T&gt; {</div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno">  500</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno">  501</span>  <span class="comment">// Constructs a null matcher.  Needed for storing Matcher objects in STL</span></div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno">  502</span>  <span class="comment">// containers.  A default-constructed matcher is not yet initialized.  You</span></div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno">  503</span>  <span class="comment">// cannot use it until a valid value has been assigned to it.</span></div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno">  504</span>  <span class="keyword">explicit</span> Matcher() {}  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno">  505</span> </div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno">  506</span>  <span class="comment">// Constructs a matcher from its implementation.</span></div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno">  507</span>  <span class="keyword">explicit</span> Matcher(<span class="keyword">const</span> MatcherInterface&lt;const T&amp;&gt;* impl)</div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno">  508</span>      : internal::MatcherBase&lt;T&gt;(impl) {}</div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno">  509</span> </div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno">  510</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> U&gt;</div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno">  511</span>  <span class="keyword">explicit</span> Matcher(</div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno">  512</span>      <span class="keyword">const</span> MatcherInterface&lt;U&gt;* impl,</div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno">  513</span>      <span class="keyword">typename</span> std::enable_if&lt;!std::is_same&lt;U, const U&amp;&gt;::value&gt;::type* =</div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno">  514</span>          <span class="keyword">nullptr</span>)</div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno">  515</span>      : internal::MatcherBase&lt;T&gt;(impl) {}</div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno">  516</span> </div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno">  517</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> M, <span class="keyword">typename</span> = <span class="keyword">typename</span> std::remove_reference&lt;</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno">  518</span>                            M&gt;::type::is_gtest_matcher&gt;</div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno">  519</span>  Matcher(M&amp;&amp; m) : internal::MatcherBase&lt;T&gt;(std::forward&lt;M&gt;(m)) {}  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno">  520</span> </div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno">  521</span>  <span class="comment">// Implicit constructor here allows people to write</span></div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno">  522</span>  <span class="comment">// EXPECT_CALL(foo, Bar(5)) instead of EXPECT_CALL(foo, Bar(Eq(5))) sometimes</span></div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno">  523</span>  Matcher(T value);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno">  524</span>};</div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno">  525</span> </div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno">  526</span><span class="comment">// The following two specializations allow the user to write str</span></div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno">  527</span><span class="comment">// instead of Eq(str) and &quot;foo&quot; instead of Eq(&quot;foo&quot;) when a std::string</span></div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno">  528</span><span class="comment">// matcher is expected.</span></div>
<div class="line"><a id="l00529" name="l00529"></a><span class="lineno">  529</span><span class="keyword">template</span> &lt;&gt;</div>
<div class="line"><a id="l00530" name="l00530"></a><span class="lineno">  530</span><span class="keyword">class </span>GTEST_API_ Matcher&lt;const std::string&amp;&gt;</div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno">  531</span>    : <span class="keyword">public</span> internal::MatcherBase&lt;const std::string&amp;&gt; {</div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno">  532</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno">  533</span>  Matcher() {}</div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno">  534</span> </div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno">  535</span>  <span class="keyword">explicit</span> Matcher(<span class="keyword">const</span> MatcherInterface&lt;const std::string&amp;&gt;* impl)</div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno">  536</span>      : internal::MatcherBase&lt;const std::string&amp;&gt;(impl) {}</div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno">  537</span> </div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno">  538</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> M, <span class="keyword">typename</span> = <span class="keyword">typename</span> std::remove_reference&lt;</div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno">  539</span>                            M&gt;::type::is_gtest_matcher&gt;</div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno">  540</span>  Matcher(M&amp;&amp; m)  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno">  541</span>      : internal::MatcherBase&lt;const std::string&amp;&gt;(std::forward&lt;M&gt;(m)) {}</div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno">  542</span> </div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno">  543</span>  <span class="comment">// Allows the user to write str instead of Eq(str) sometimes, where</span></div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno">  544</span>  <span class="comment">// str is a std::string object.</span></div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno">  545</span>  Matcher(<span class="keyword">const</span> std::string&amp; s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno">  546</span> </div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno">  547</span>  <span class="comment">// Allows the user to write &quot;foo&quot; instead of Eq(&quot;foo&quot;) sometimes.</span></div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno">  548</span>  Matcher(<span class="keyword">const</span> <span class="keywordtype">char</span>* s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno">  549</span>};</div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno">  550</span> </div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno">  551</span><span class="keyword">template</span> &lt;&gt;</div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno">  552</span><span class="keyword">class </span>GTEST_API_ Matcher&lt;std::string&gt;</div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno">  553</span>    : <span class="keyword">public</span> internal::MatcherBase&lt;std::string&gt; {</div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno">  554</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno">  555</span>  Matcher() {}</div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno">  556</span> </div>
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno">  557</span>  <span class="keyword">explicit</span> Matcher(<span class="keyword">const</span> MatcherInterface&lt;const std::string&amp;&gt;* impl)</div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno">  558</span>      : internal::MatcherBase&lt;std::string&gt;(impl) {}</div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno">  559</span>  <span class="keyword">explicit</span> Matcher(<span class="keyword">const</span> MatcherInterface&lt;std::string&gt;* impl)</div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno">  560</span>      : internal::MatcherBase&lt;std::string&gt;(impl) {}</div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno">  561</span> </div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno">  562</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> M, <span class="keyword">typename</span> = <span class="keyword">typename</span> std::remove_reference&lt;</div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno">  563</span>                            M&gt;::type::is_gtest_matcher&gt;</div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno">  564</span>  Matcher(M&amp;&amp; m)  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno">  565</span>      : internal::MatcherBase&lt;std::string&gt;(std::forward&lt;M&gt;(m)) {}</div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno">  566</span> </div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno">  567</span>  <span class="comment">// Allows the user to write str instead of Eq(str) sometimes, where</span></div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno">  568</span>  <span class="comment">// str is a string object.</span></div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno">  569</span>  Matcher(<span class="keyword">const</span> std::string&amp; s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno">  570</span> </div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno">  571</span>  <span class="comment">// Allows the user to write &quot;foo&quot; instead of Eq(&quot;foo&quot;) sometimes.</span></div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno">  572</span>  Matcher(<span class="keyword">const</span> <span class="keywordtype">char</span>* s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno">  573</span>};</div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno">  574</span> </div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno">  575</span><span class="preprocessor">#if GTEST_INTERNAL_HAS_STRING_VIEW</span></div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno">  576</span><span class="comment">// The following two specializations allow the user to write str</span></div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno">  577</span><span class="comment">// instead of Eq(str) and &quot;foo&quot; instead of Eq(&quot;foo&quot;) when a absl::string_view</span></div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno">  578</span><span class="comment">// matcher is expected.</span></div>
<div class="line"><a id="l00579" name="l00579"></a><span class="lineno">  579</span><span class="keyword">template</span> &lt;&gt;</div>
<div class="line"><a id="l00580" name="l00580"></a><span class="lineno">  580</span><span class="keyword">class </span>GTEST_API_ Matcher&lt;const internal::StringView&amp;&gt;</div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno">  581</span>    : <span class="keyword">public</span> internal::MatcherBase&lt;const internal::StringView&amp;&gt; {</div>
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno">  582</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno">  583</span>  Matcher() {}</div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno">  584</span> </div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno">  585</span>  <span class="keyword">explicit</span> Matcher(<span class="keyword">const</span> MatcherInterface&lt;const internal::StringView&amp;&gt;* impl)</div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno">  586</span>      : internal::MatcherBase&lt;const internal::StringView&amp;&gt;(impl) {}</div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno">  587</span> </div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno">  588</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> M, <span class="keyword">typename</span> = <span class="keyword">typename</span> std::remove_reference&lt;</div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno">  589</span>                            M&gt;::type::is_gtest_matcher&gt;</div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno">  590</span>  Matcher(M&amp;&amp; m)  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno">  591</span>      : internal::MatcherBase&lt;const internal::StringView&amp;&gt;(std::forward&lt;M&gt;(m)) {</div>
<div class="line"><a id="l00592" name="l00592"></a><span class="lineno">  592</span>  }</div>
<div class="line"><a id="l00593" name="l00593"></a><span class="lineno">  593</span> </div>
<div class="line"><a id="l00594" name="l00594"></a><span class="lineno">  594</span>  <span class="comment">// Allows the user to write str instead of Eq(str) sometimes, where</span></div>
<div class="line"><a id="l00595" name="l00595"></a><span class="lineno">  595</span>  <span class="comment">// str is a std::string object.</span></div>
<div class="line"><a id="l00596" name="l00596"></a><span class="lineno">  596</span>  Matcher(<span class="keyword">const</span> std::string&amp; s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00597" name="l00597"></a><span class="lineno">  597</span> </div>
<div class="line"><a id="l00598" name="l00598"></a><span class="lineno">  598</span>  <span class="comment">// Allows the user to write &quot;foo&quot; instead of Eq(&quot;foo&quot;) sometimes.</span></div>
<div class="line"><a id="l00599" name="l00599"></a><span class="lineno">  599</span>  Matcher(<span class="keyword">const</span> <span class="keywordtype">char</span>* s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00600" name="l00600"></a><span class="lineno">  600</span> </div>
<div class="line"><a id="l00601" name="l00601"></a><span class="lineno">  601</span>  <span class="comment">// Allows the user to pass absl::string_views or std::string_views directly.</span></div>
<div class="line"><a id="l00602" name="l00602"></a><span class="lineno">  602</span>  Matcher(internal::StringView s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00603" name="l00603"></a><span class="lineno">  603</span>};</div>
<div class="line"><a id="l00604" name="l00604"></a><span class="lineno">  604</span> </div>
<div class="line"><a id="l00605" name="l00605"></a><span class="lineno">  605</span><span class="keyword">template</span> &lt;&gt;</div>
<div class="line"><a id="l00606" name="l00606"></a><span class="lineno">  606</span><span class="keyword">class </span>GTEST_API_ Matcher&lt;internal::StringView&gt;</div>
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno">  607</span>    : <span class="keyword">public</span> internal::MatcherBase&lt;internal::StringView&gt; {</div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno">  608</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno">  609</span>  Matcher() {}</div>
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno">  610</span> </div>
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno">  611</span>  <span class="keyword">explicit</span> Matcher(<span class="keyword">const</span> MatcherInterface&lt;const internal::StringView&amp;&gt;* impl)</div>
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno">  612</span>      : internal::MatcherBase&lt;internal::StringView&gt;(impl) {}</div>
<div class="line"><a id="l00613" name="l00613"></a><span class="lineno">  613</span>  <span class="keyword">explicit</span> Matcher(<span class="keyword">const</span> MatcherInterface&lt;internal::StringView&gt;* impl)</div>
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno">  614</span>      : internal::MatcherBase&lt;internal::StringView&gt;(impl) {}</div>
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno">  615</span> </div>
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno">  616</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> M, <span class="keyword">typename</span> = <span class="keyword">typename</span> std::remove_reference&lt;</div>
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno">  617</span>                            M&gt;::type::is_gtest_matcher&gt;</div>
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno">  618</span>  Matcher(M&amp;&amp; m)  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00619" name="l00619"></a><span class="lineno">  619</span>      : internal::MatcherBase&lt;internal::StringView&gt;(std::forward&lt;M&gt;(m)) {}</div>
<div class="line"><a id="l00620" name="l00620"></a><span class="lineno">  620</span> </div>
<div class="line"><a id="l00621" name="l00621"></a><span class="lineno">  621</span>  <span class="comment">// Allows the user to write str instead of Eq(str) sometimes, where</span></div>
<div class="line"><a id="l00622" name="l00622"></a><span class="lineno">  622</span>  <span class="comment">// str is a std::string object.</span></div>
<div class="line"><a id="l00623" name="l00623"></a><span class="lineno">  623</span>  Matcher(<span class="keyword">const</span> std::string&amp; s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00624" name="l00624"></a><span class="lineno">  624</span> </div>
<div class="line"><a id="l00625" name="l00625"></a><span class="lineno">  625</span>  <span class="comment">// Allows the user to write &quot;foo&quot; instead of Eq(&quot;foo&quot;) sometimes.</span></div>
<div class="line"><a id="l00626" name="l00626"></a><span class="lineno">  626</span>  Matcher(<span class="keyword">const</span> <span class="keywordtype">char</span>* s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00627" name="l00627"></a><span class="lineno">  627</span> </div>
<div class="line"><a id="l00628" name="l00628"></a><span class="lineno">  628</span>  <span class="comment">// Allows the user to pass absl::string_views or std::string_views directly.</span></div>
<div class="line"><a id="l00629" name="l00629"></a><span class="lineno">  629</span>  Matcher(internal::StringView s);  <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00630" name="l00630"></a><span class="lineno">  630</span>};</div>
<div class="line"><a id="l00631" name="l00631"></a><span class="lineno">  631</span><span class="preprocessor">#endif  </span><span class="comment">// GTEST_INTERNAL_HAS_STRING_VIEW</span></div>
<div class="line"><a id="l00632" name="l00632"></a><span class="lineno">  632</span> </div>
<div class="line"><a id="l00633" name="l00633"></a><span class="lineno">  633</span><span class="comment">// Prints a matcher in a human-readable format.</span></div>
<div class="line"><a id="l00634" name="l00634"></a><span class="lineno">  634</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00635" name="l00635"></a><span class="lineno">  635</span>std::ostream&amp; operator&lt;&lt;(std::ostream&amp; os, <span class="keyword">const</span> Matcher&lt;T&gt;&amp; matcher) {</div>
<div class="line"><a id="l00636" name="l00636"></a><span class="lineno">  636</span>  matcher.DescribeTo(&amp;os);</div>
<div class="line"><a id="l00637" name="l00637"></a><span class="lineno">  637</span>  <span class="keywordflow">return</span> os;</div>
<div class="line"><a id="l00638" name="l00638"></a><span class="lineno">  638</span>}</div>
<div class="line"><a id="l00639" name="l00639"></a><span class="lineno">  639</span> </div>
<div class="line"><a id="l00640" name="l00640"></a><span class="lineno">  640</span><span class="comment">// The PolymorphicMatcher class template makes it easy to implement a</span></div>
<div class="line"><a id="l00641" name="l00641"></a><span class="lineno">  641</span><span class="comment">// polymorphic matcher (i.e. a matcher that can match values of more</span></div>
<div class="line"><a id="l00642" name="l00642"></a><span class="lineno">  642</span><span class="comment">// than one type, e.g. Eq(n) and NotNull()).</span></div>
<div class="line"><a id="l00643" name="l00643"></a><span class="lineno">  643</span><span class="comment">//</span></div>
<div class="line"><a id="l00644" name="l00644"></a><span class="lineno">  644</span><span class="comment">// To define a polymorphic matcher, a user should provide an Impl</span></div>
<div class="line"><a id="l00645" name="l00645"></a><span class="lineno">  645</span><span class="comment">// class that has a DescribeTo() method and a DescribeNegationTo()</span></div>
<div class="line"><a id="l00646" name="l00646"></a><span class="lineno">  646</span><span class="comment">// method, and define a member function (or member function template)</span></div>
<div class="line"><a id="l00647" name="l00647"></a><span class="lineno">  647</span><span class="comment">//</span></div>
<div class="line"><a id="l00648" name="l00648"></a><span class="lineno">  648</span><span class="comment">//   bool MatchAndExplain(const Value&amp; value,</span></div>
<div class="line"><a id="l00649" name="l00649"></a><span class="lineno">  649</span><span class="comment">//                        MatchResultListener* listener) const;</span></div>
<div class="line"><a id="l00650" name="l00650"></a><span class="lineno">  650</span><span class="comment">//</span></div>
<div class="line"><a id="l00651" name="l00651"></a><span class="lineno">  651</span><span class="comment">// See the definition of NotNull() for a complete example.</span></div>
<div class="line"><a id="l00652" name="l00652"></a><span class="lineno">  652</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> Impl&gt;</div>
<div class="line"><a id="l00653" name="l00653"></a><span class="lineno">  653</span><span class="keyword">class </span>PolymorphicMatcher {</div>
<div class="line"><a id="l00654" name="l00654"></a><span class="lineno">  654</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00655" name="l00655"></a><span class="lineno">  655</span>  <span class="keyword">explicit</span> PolymorphicMatcher(<span class="keyword">const</span> Impl&amp; an_impl) : impl_(an_impl) {}</div>
<div class="line"><a id="l00656" name="l00656"></a><span class="lineno">  656</span> </div>
<div class="line"><a id="l00657" name="l00657"></a><span class="lineno">  657</span>  <span class="comment">// Returns a mutable reference to the underlying matcher</span></div>
<div class="line"><a id="l00658" name="l00658"></a><span class="lineno">  658</span>  <span class="comment">// implementation object.</span></div>
<div class="line"><a id="l00659" name="l00659"></a><span class="lineno">  659</span>  Impl&amp; mutable_impl() { <span class="keywordflow">return</span> impl_; }</div>
<div class="line"><a id="l00660" name="l00660"></a><span class="lineno">  660</span> </div>
<div class="line"><a id="l00661" name="l00661"></a><span class="lineno">  661</span>  <span class="comment">// Returns an immutable reference to the underlying matcher</span></div>
<div class="line"><a id="l00662" name="l00662"></a><span class="lineno">  662</span>  <span class="comment">// implementation object.</span></div>
<div class="line"><a id="l00663" name="l00663"></a><span class="lineno">  663</span>  <span class="keyword">const</span> Impl&amp; impl()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> impl_; }</div>
<div class="line"><a id="l00664" name="l00664"></a><span class="lineno">  664</span> </div>
<div class="line"><a id="l00665" name="l00665"></a><span class="lineno">  665</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00666" name="l00666"></a><span class="lineno">  666</span>  <span class="keyword">operator</span> Matcher&lt;T&gt;()<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00667" name="l00667"></a><span class="lineno">  667</span>    <span class="keywordflow">return</span> Matcher&lt;T&gt;(<span class="keyword">new</span> MonomorphicImpl&lt;const T&amp;&gt;(impl_));</div>
<div class="line"><a id="l00668" name="l00668"></a><span class="lineno">  668</span>  }</div>
<div class="line"><a id="l00669" name="l00669"></a><span class="lineno">  669</span> </div>
<div class="line"><a id="l00670" name="l00670"></a><span class="lineno">  670</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00671" name="l00671"></a><span class="lineno">  671</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00672" name="l00672"></a><span class="lineno">  672</span>  <span class="keyword">class </span>MonomorphicImpl : <span class="keyword">public</span> MatcherInterface&lt;T&gt; {</div>
<div class="line"><a id="l00673" name="l00673"></a><span class="lineno">  673</span>   <span class="keyword">public</span>:</div>
<div class="line"><a id="l00674" name="l00674"></a><span class="lineno">  674</span>    <span class="keyword">explicit</span> MonomorphicImpl(<span class="keyword">const</span> Impl&amp; impl) : impl_(impl) {}</div>
<div class="line"><a id="l00675" name="l00675"></a><span class="lineno">  675</span> </div>
<div class="line"><a id="l00676" name="l00676"></a><span class="lineno">  676</span>    <span class="keywordtype">void</span> DescribeTo(::std::ostream* os)<span class="keyword"> const override </span>{ impl_.DescribeTo(os); }</div>
<div class="line"><a id="l00677" name="l00677"></a><span class="lineno">  677</span> </div>
<div class="line"><a id="l00678" name="l00678"></a><span class="lineno">  678</span>    <span class="keywordtype">void</span> DescribeNegationTo(::std::ostream* os)<span class="keyword"> const override </span>{</div>
<div class="line"><a id="l00679" name="l00679"></a><span class="lineno">  679</span>      impl_.DescribeNegationTo(os);</div>
<div class="line"><a id="l00680" name="l00680"></a><span class="lineno">  680</span>    }</div>
<div class="line"><a id="l00681" name="l00681"></a><span class="lineno">  681</span> </div>
<div class="line"><a id="l00682" name="l00682"></a><span class="lineno">  682</span>    <span class="keywordtype">bool</span> MatchAndExplain(T x, MatchResultListener* listener)<span class="keyword"> const override </span>{</div>
<div class="line"><a id="l00683" name="l00683"></a><span class="lineno">  683</span>      <span class="keywordflow">return</span> impl_.MatchAndExplain(x, listener);</div>
<div class="line"><a id="l00684" name="l00684"></a><span class="lineno">  684</span>    }</div>
<div class="line"><a id="l00685" name="l00685"></a><span class="lineno">  685</span> </div>
<div class="line"><a id="l00686" name="l00686"></a><span class="lineno">  686</span>   <span class="keyword">private</span>:</div>
<div class="line"><a id="l00687" name="l00687"></a><span class="lineno">  687</span>    <span class="keyword">const</span> Impl impl_;</div>
<div class="line"><a id="l00688" name="l00688"></a><span class="lineno">  688</span>  };</div>
<div class="line"><a id="l00689" name="l00689"></a><span class="lineno">  689</span> </div>
<div class="line"><a id="l00690" name="l00690"></a><span class="lineno">  690</span>  Impl impl_;</div>
<div class="line"><a id="l00691" name="l00691"></a><span class="lineno">  691</span>};</div>
<div class="line"><a id="l00692" name="l00692"></a><span class="lineno">  692</span> </div>
<div class="line"><a id="l00693" name="l00693"></a><span class="lineno">  693</span><span class="comment">// Creates a matcher from its implementation.</span></div>
<div class="line"><a id="l00694" name="l00694"></a><span class="lineno">  694</span><span class="comment">// DEPRECATED: Especially in the generic code, prefer:</span></div>
<div class="line"><a id="l00695" name="l00695"></a><span class="lineno">  695</span><span class="comment">//   Matcher&lt;T&gt;(new MyMatcherImpl&lt;const T&amp;&gt;(...));</span></div>
<div class="line"><a id="l00696" name="l00696"></a><span class="lineno">  696</span><span class="comment">//</span></div>
<div class="line"><a id="l00697" name="l00697"></a><span class="lineno">  697</span><span class="comment">// MakeMatcher may create a Matcher that accepts its argument by value, which</span></div>
<div class="line"><a id="l00698" name="l00698"></a><span class="lineno">  698</span><span class="comment">// leads to unnecessary copies &amp; lack of support for non-copyable types.</span></div>
<div class="line"><a id="l00699" name="l00699"></a><span class="lineno">  699</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00700" name="l00700"></a><span class="lineno">  700</span><span class="keyword">inline</span> Matcher&lt;T&gt; MakeMatcher(<span class="keyword">const</span> MatcherInterface&lt;T&gt;* impl) {</div>
<div class="line"><a id="l00701" name="l00701"></a><span class="lineno">  701</span>  <span class="keywordflow">return</span> Matcher&lt;T&gt;(impl);</div>
<div class="line"><a id="l00702" name="l00702"></a><span class="lineno">  702</span>}</div>
<div class="line"><a id="l00703" name="l00703"></a><span class="lineno">  703</span> </div>
<div class="line"><a id="l00704" name="l00704"></a><span class="lineno">  704</span><span class="comment">// Creates a polymorphic matcher from its implementation.  This is</span></div>
<div class="line"><a id="l00705" name="l00705"></a><span class="lineno">  705</span><span class="comment">// easier to use than the PolymorphicMatcher&lt;Impl&gt; constructor as it</span></div>
<div class="line"><a id="l00706" name="l00706"></a><span class="lineno">  706</span><span class="comment">// doesn&#39;t require you to explicitly write the template argument, e.g.</span></div>
<div class="line"><a id="l00707" name="l00707"></a><span class="lineno">  707</span><span class="comment">//</span></div>
<div class="line"><a id="l00708" name="l00708"></a><span class="lineno">  708</span><span class="comment">//   MakePolymorphicMatcher(foo);</span></div>
<div class="line"><a id="l00709" name="l00709"></a><span class="lineno">  709</span><span class="comment">// vs</span></div>
<div class="line"><a id="l00710" name="l00710"></a><span class="lineno">  710</span><span class="comment">//   PolymorphicMatcher&lt;TypeOfFoo&gt;(foo);</span></div>
<div class="line"><a id="l00711" name="l00711"></a><span class="lineno">  711</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> Impl&gt;</div>
<div class="line"><a id="l00712" name="l00712"></a><span class="lineno">  712</span><span class="keyword">inline</span> PolymorphicMatcher&lt;Impl&gt; MakePolymorphicMatcher(<span class="keyword">const</span> Impl&amp; impl) {</div>
<div class="line"><a id="l00713" name="l00713"></a><span class="lineno">  713</span>  <span class="keywordflow">return</span> PolymorphicMatcher&lt;Impl&gt;(impl);</div>
<div class="line"><a id="l00714" name="l00714"></a><span class="lineno">  714</span>}</div>
<div class="line"><a id="l00715" name="l00715"></a><span class="lineno">  715</span> </div>
<div class="line"><a id="l00716" name="l00716"></a><span class="lineno">  716</span><span class="keyword">namespace </span>internal {</div>
<div class="line"><a id="l00717" name="l00717"></a><span class="lineno">  717</span><span class="comment">// Implements a matcher that compares a given value with a</span></div>
<div class="line"><a id="l00718" name="l00718"></a><span class="lineno">  718</span><span class="comment">// pre-supplied value using one of the ==, &lt;=, &lt;, etc, operators.  The</span></div>
<div class="line"><a id="l00719" name="l00719"></a><span class="lineno">  719</span><span class="comment">// two values being compared don&#39;t have to have the same type.</span></div>
<div class="line"><a id="l00720" name="l00720"></a><span class="lineno">  720</span><span class="comment">//</span></div>
<div class="line"><a id="l00721" name="l00721"></a><span class="lineno">  721</span><span class="comment">// The matcher defined here is polymorphic (for example, Eq(5) can be</span></div>
<div class="line"><a id="l00722" name="l00722"></a><span class="lineno">  722</span><span class="comment">// used to match an int, a short, a double, etc).  Therefore we use</span></div>
<div class="line"><a id="l00723" name="l00723"></a><span class="lineno">  723</span><span class="comment">// a template type conversion operator in the implementation.</span></div>
<div class="line"><a id="l00724" name="l00724"></a><span class="lineno">  724</span><span class="comment">//</span></div>
<div class="line"><a id="l00725" name="l00725"></a><span class="lineno">  725</span><span class="comment">// The following template definition assumes that the Rhs parameter is</span></div>
<div class="line"><a id="l00726" name="l00726"></a><span class="lineno">  726</span><span class="comment">// a &quot;bare&quot; type (i.e. neither &#39;const T&#39; nor &#39;T&amp;&#39;).</span></div>
<div class="line"><a id="l00727" name="l00727"></a><span class="lineno">  727</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keyword">typename</span> Rhs, <span class="keyword">typename</span> Op&gt;</div>
<div class="line"><a id="l00728" name="l00728"></a><span class="lineno">  728</span><span class="keyword">class </span>ComparisonBase {</div>
<div class="line"><a id="l00729" name="l00729"></a><span class="lineno">  729</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00730" name="l00730"></a><span class="lineno">  730</span>  <span class="keyword">explicit</span> ComparisonBase(<span class="keyword">const</span> Rhs&amp; rhs) : rhs_(rhs) {}</div>
<div class="line"><a id="l00731" name="l00731"></a><span class="lineno">  731</span> </div>
<div class="line"><a id="l00732" name="l00732"></a><span class="lineno">  732</span>  <span class="keyword">using </span>is_gtest_matcher = void;</div>
<div class="line"><a id="l00733" name="l00733"></a><span class="lineno">  733</span> </div>
<div class="line"><a id="l00734" name="l00734"></a><span class="lineno">  734</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Lhs&gt;</div>
<div class="line"><a id="l00735" name="l00735"></a><span class="lineno">  735</span>  <span class="keywordtype">bool</span> MatchAndExplain(<span class="keyword">const</span> Lhs&amp; lhs, std::ostream*)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00736" name="l00736"></a><span class="lineno">  736</span>    <span class="keywordflow">return</span> Op()(lhs, Unwrap(rhs_));</div>
<div class="line"><a id="l00737" name="l00737"></a><span class="lineno">  737</span>  }</div>
<div class="line"><a id="l00738" name="l00738"></a><span class="lineno">  738</span>  <span class="keywordtype">void</span> DescribeTo(std::ostream* os)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00739" name="l00739"></a><span class="lineno">  739</span>    *os &lt;&lt; D::Desc() &lt;&lt; <span class="stringliteral">&quot; &quot;</span>;</div>
<div class="line"><a id="l00740" name="l00740"></a><span class="lineno">  740</span>    UniversalPrint(Unwrap(rhs_), os);</div>
<div class="line"><a id="l00741" name="l00741"></a><span class="lineno">  741</span>  }</div>
<div class="line"><a id="l00742" name="l00742"></a><span class="lineno">  742</span>  <span class="keywordtype">void</span> DescribeNegationTo(std::ostream* os)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00743" name="l00743"></a><span class="lineno">  743</span>    *os &lt;&lt; D::NegatedDesc() &lt;&lt; <span class="stringliteral">&quot; &quot;</span>;</div>
<div class="line"><a id="l00744" name="l00744"></a><span class="lineno">  744</span>    UniversalPrint(Unwrap(rhs_), os);</div>
<div class="line"><a id="l00745" name="l00745"></a><span class="lineno">  745</span>  }</div>
<div class="line"><a id="l00746" name="l00746"></a><span class="lineno">  746</span> </div>
<div class="line"><a id="l00747" name="l00747"></a><span class="lineno">  747</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00748" name="l00748"></a><span class="lineno">  748</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00749" name="l00749"></a><span class="lineno">  749</span>  <span class="keyword">static</span> <span class="keyword">const</span> T&amp; Unwrap(<span class="keyword">const</span> T&amp; v) {</div>
<div class="line"><a id="l00750" name="l00750"></a><span class="lineno">  750</span>    <span class="keywordflow">return</span> v;</div>
<div class="line"><a id="l00751" name="l00751"></a><span class="lineno">  751</span>  }</div>
<div class="line"><a id="l00752" name="l00752"></a><span class="lineno">  752</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00753" name="l00753"></a><span class="lineno">  753</span>  <span class="keyword">static</span> <span class="keyword">const</span> T&amp; Unwrap(std::reference_wrapper&lt;T&gt; v) {</div>
<div class="line"><a id="l00754" name="l00754"></a><span class="lineno">  754</span>    <span class="keywordflow">return</span> v;</div>
<div class="line"><a id="l00755" name="l00755"></a><span class="lineno">  755</span>  }</div>
<div class="line"><a id="l00756" name="l00756"></a><span class="lineno">  756</span> </div>
<div class="line"><a id="l00757" name="l00757"></a><span class="lineno">  757</span>  Rhs rhs_;</div>
<div class="line"><a id="l00758" name="l00758"></a><span class="lineno">  758</span>};</div>
<div class="line"><a id="l00759" name="l00759"></a><span class="lineno">  759</span> </div>
<div class="line"><a id="l00760" name="l00760"></a><span class="lineno">  760</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00761" name="l00761"></a><span class="lineno">  761</span><span class="keyword">class </span>EqMatcher : <span class="keyword">public</span> ComparisonBase&lt;EqMatcher&lt;Rhs&gt;, Rhs, AnyEq&gt; {</div>
<div class="line"><a id="l00762" name="l00762"></a><span class="lineno">  762</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00763" name="l00763"></a><span class="lineno">  763</span>  <span class="keyword">explicit</span> EqMatcher(<span class="keyword">const</span> Rhs&amp; rhs)</div>
<div class="line"><a id="l00764" name="l00764"></a><span class="lineno">  764</span>      : ComparisonBase&lt;EqMatcher&lt;Rhs&gt;, Rhs, AnyEq&gt;(rhs) {}</div>
<div class="line"><a id="l00765" name="l00765"></a><span class="lineno">  765</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* Desc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;is equal to&quot;</span>; }</div>
<div class="line"><a id="l00766" name="l00766"></a><span class="lineno">  766</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* NegatedDesc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;isn&#39;t equal to&quot;</span>; }</div>
<div class="line"><a id="l00767" name="l00767"></a><span class="lineno">  767</span>};</div>
<div class="line"><a id="l00768" name="l00768"></a><span class="lineno">  768</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00769" name="l00769"></a><span class="lineno">  769</span><span class="keyword">class </span>NeMatcher : <span class="keyword">public</span> ComparisonBase&lt;NeMatcher&lt;Rhs&gt;, Rhs, AnyNe&gt; {</div>
<div class="line"><a id="l00770" name="l00770"></a><span class="lineno">  770</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00771" name="l00771"></a><span class="lineno">  771</span>  <span class="keyword">explicit</span> NeMatcher(<span class="keyword">const</span> Rhs&amp; rhs)</div>
<div class="line"><a id="l00772" name="l00772"></a><span class="lineno">  772</span>      : ComparisonBase&lt;NeMatcher&lt;Rhs&gt;, Rhs, AnyNe&gt;(rhs) {}</div>
<div class="line"><a id="l00773" name="l00773"></a><span class="lineno">  773</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* Desc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;isn&#39;t equal to&quot;</span>; }</div>
<div class="line"><a id="l00774" name="l00774"></a><span class="lineno">  774</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* NegatedDesc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;is equal to&quot;</span>; }</div>
<div class="line"><a id="l00775" name="l00775"></a><span class="lineno">  775</span>};</div>
<div class="line"><a id="l00776" name="l00776"></a><span class="lineno">  776</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00777" name="l00777"></a><span class="lineno">  777</span><span class="keyword">class </span>LtMatcher : <span class="keyword">public</span> ComparisonBase&lt;LtMatcher&lt;Rhs&gt;, Rhs, AnyLt&gt; {</div>
<div class="line"><a id="l00778" name="l00778"></a><span class="lineno">  778</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00779" name="l00779"></a><span class="lineno">  779</span>  <span class="keyword">explicit</span> LtMatcher(<span class="keyword">const</span> Rhs&amp; rhs)</div>
<div class="line"><a id="l00780" name="l00780"></a><span class="lineno">  780</span>      : ComparisonBase&lt;LtMatcher&lt;Rhs&gt;, Rhs, AnyLt&gt;(rhs) {}</div>
<div class="line"><a id="l00781" name="l00781"></a><span class="lineno">  781</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* Desc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;is &lt;&quot;</span>; }</div>
<div class="line"><a id="l00782" name="l00782"></a><span class="lineno">  782</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* NegatedDesc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;isn&#39;t &lt;&quot;</span>; }</div>
<div class="line"><a id="l00783" name="l00783"></a><span class="lineno">  783</span>};</div>
<div class="line"><a id="l00784" name="l00784"></a><span class="lineno">  784</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00785" name="l00785"></a><span class="lineno">  785</span><span class="keyword">class </span>GtMatcher : <span class="keyword">public</span> ComparisonBase&lt;GtMatcher&lt;Rhs&gt;, Rhs, AnyGt&gt; {</div>
<div class="line"><a id="l00786" name="l00786"></a><span class="lineno">  786</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00787" name="l00787"></a><span class="lineno">  787</span>  <span class="keyword">explicit</span> GtMatcher(<span class="keyword">const</span> Rhs&amp; rhs)</div>
<div class="line"><a id="l00788" name="l00788"></a><span class="lineno">  788</span>      : ComparisonBase&lt;GtMatcher&lt;Rhs&gt;, Rhs, AnyGt&gt;(rhs) {}</div>
<div class="line"><a id="l00789" name="l00789"></a><span class="lineno">  789</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* Desc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;is &gt;&quot;</span>; }</div>
<div class="line"><a id="l00790" name="l00790"></a><span class="lineno">  790</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* NegatedDesc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;isn&#39;t &gt;&quot;</span>; }</div>
<div class="line"><a id="l00791" name="l00791"></a><span class="lineno">  791</span>};</div>
<div class="line"><a id="l00792" name="l00792"></a><span class="lineno">  792</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00793" name="l00793"></a><span class="lineno">  793</span><span class="keyword">class </span>LeMatcher : <span class="keyword">public</span> ComparisonBase&lt;LeMatcher&lt;Rhs&gt;, Rhs, AnyLe&gt; {</div>
<div class="line"><a id="l00794" name="l00794"></a><span class="lineno">  794</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00795" name="l00795"></a><span class="lineno">  795</span>  <span class="keyword">explicit</span> LeMatcher(<span class="keyword">const</span> Rhs&amp; rhs)</div>
<div class="line"><a id="l00796" name="l00796"></a><span class="lineno">  796</span>      : ComparisonBase&lt;LeMatcher&lt;Rhs&gt;, Rhs, AnyLe&gt;(rhs) {}</div>
<div class="line"><a id="l00797" name="l00797"></a><span class="lineno">  797</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* Desc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;is &lt;=&quot;</span>; }</div>
<div class="line"><a id="l00798" name="l00798"></a><span class="lineno">  798</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* NegatedDesc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;isn&#39;t &lt;=&quot;</span>; }</div>
<div class="line"><a id="l00799" name="l00799"></a><span class="lineno">  799</span>};</div>
<div class="line"><a id="l00800" name="l00800"></a><span class="lineno">  800</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00801" name="l00801"></a><span class="lineno">  801</span><span class="keyword">class </span>GeMatcher : <span class="keyword">public</span> ComparisonBase&lt;GeMatcher&lt;Rhs&gt;, Rhs, AnyGe&gt; {</div>
<div class="line"><a id="l00802" name="l00802"></a><span class="lineno">  802</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00803" name="l00803"></a><span class="lineno">  803</span>  <span class="keyword">explicit</span> GeMatcher(<span class="keyword">const</span> Rhs&amp; rhs)</div>
<div class="line"><a id="l00804" name="l00804"></a><span class="lineno">  804</span>      : ComparisonBase&lt;GeMatcher&lt;Rhs&gt;, Rhs, AnyGe&gt;(rhs) {}</div>
<div class="line"><a id="l00805" name="l00805"></a><span class="lineno">  805</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* Desc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;is &gt;=&quot;</span>; }</div>
<div class="line"><a id="l00806" name="l00806"></a><span class="lineno">  806</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* NegatedDesc() { <span class="keywordflow">return</span> <span class="stringliteral">&quot;isn&#39;t &gt;=&quot;</span>; }</div>
<div class="line"><a id="l00807" name="l00807"></a><span class="lineno">  807</span>};</div>
<div class="line"><a id="l00808" name="l00808"></a><span class="lineno">  808</span> </div>
<div class="line"><a id="l00809" name="l00809"></a><span class="lineno">  809</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> = <span class="keyword">typename</span> std::enable_if&lt;</div>
<div class="line"><a id="l00810" name="l00810"></a><span class="lineno">  810</span>                          std::is_constructible&lt;std::string, T&gt;::value&gt;::type&gt;</div>
<div class="line"><a id="l00811" name="l00811"></a><span class="lineno">  811</span><span class="keyword">using </span>StringLike = T;</div>
<div class="line"><a id="l00812" name="l00812"></a><span class="lineno">  812</span> </div>
<div class="line"><a id="l00813" name="l00813"></a><span class="lineno">  813</span><span class="comment">// Implements polymorphic matchers MatchesRegex(regex) and</span></div>
<div class="line"><a id="l00814" name="l00814"></a><span class="lineno">  814</span><span class="comment">// ContainsRegex(regex), which can be used as a Matcher&lt;T&gt; as long as</span></div>
<div class="line"><a id="l00815" name="l00815"></a><span class="lineno">  815</span><span class="comment">// T can be converted to a string.</span></div>
<div class="line"><a id="l00816" name="l00816"></a><span class="lineno">  816</span><span class="keyword">class </span>MatchesRegexMatcher {</div>
<div class="line"><a id="l00817" name="l00817"></a><span class="lineno">  817</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00818" name="l00818"></a><span class="lineno">  818</span>  MatchesRegexMatcher(<span class="keyword">const</span> RE* regex, <span class="keywordtype">bool</span> full_match)</div>
<div class="line"><a id="l00819" name="l00819"></a><span class="lineno">  819</span>      : regex_(regex), full_match_(full_match) {}</div>
<div class="line"><a id="l00820" name="l00820"></a><span class="lineno">  820</span> </div>
<div class="line"><a id="l00821" name="l00821"></a><span class="lineno">  821</span><span class="preprocessor">#if GTEST_INTERNAL_HAS_STRING_VIEW</span></div>
<div class="line"><a id="l00822" name="l00822"></a><span class="lineno">  822</span>  <span class="keywordtype">bool</span> MatchAndExplain(<span class="keyword">const</span> internal::StringView&amp; s,</div>
<div class="line"><a id="l00823" name="l00823"></a><span class="lineno">  823</span>                       MatchResultListener* listener)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00824" name="l00824"></a><span class="lineno">  824</span>    <span class="keywordflow">return</span> MatchAndExplain(std::string(s), listener);</div>
<div class="line"><a id="l00825" name="l00825"></a><span class="lineno">  825</span>  }</div>
<div class="line"><a id="l00826" name="l00826"></a><span class="lineno">  826</span><span class="preprocessor">#endif  </span><span class="comment">// GTEST_INTERNAL_HAS_STRING_VIEW</span></div>
<div class="line"><a id="l00827" name="l00827"></a><span class="lineno">  827</span> </div>
<div class="line"><a id="l00828" name="l00828"></a><span class="lineno">  828</span>  <span class="comment">// Accepts pointer types, particularly:</span></div>
<div class="line"><a id="l00829" name="l00829"></a><span class="lineno">  829</span>  <span class="comment">//   const char*</span></div>
<div class="line"><a id="l00830" name="l00830"></a><span class="lineno">  830</span>  <span class="comment">//   char*</span></div>
<div class="line"><a id="l00831" name="l00831"></a><span class="lineno">  831</span>  <span class="comment">//   const wchar_t*</span></div>
<div class="line"><a id="l00832" name="l00832"></a><span class="lineno">  832</span>  <span class="comment">//   wchar_t*</span></div>
<div class="line"><a id="l00833" name="l00833"></a><span class="lineno">  833</span>  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharType&gt;</div>
<div class="line"><a id="l00834" name="l00834"></a><span class="lineno">  834</span>  <span class="keywordtype">bool</span> MatchAndExplain(CharType* s, MatchResultListener* listener)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00835" name="l00835"></a><span class="lineno">  835</span>    <span class="keywordflow">return</span> s != <span class="keyword">nullptr</span> &amp;&amp; MatchAndExplain(std::string(s), listener);</div>
<div class="line"><a id="l00836" name="l00836"></a><span class="lineno">  836</span>  }</div>
<div class="line"><a id="l00837" name="l00837"></a><span class="lineno">  837</span> </div>
<div class="line"><a id="l00838" name="l00838"></a><span class="lineno">  838</span>  <span class="comment">// Matches anything that can convert to std::string.</span></div>
<div class="line"><a id="l00839" name="l00839"></a><span class="lineno">  839</span>  <span class="comment">//</span></div>
<div class="line"><a id="l00840" name="l00840"></a><span class="lineno">  840</span>  <span class="comment">// This is a template, not just a plain function with const std::string&amp;,</span></div>
<div class="line"><a id="l00841" name="l00841"></a><span class="lineno">  841</span>  <span class="comment">// because absl::string_view has some interfering non-explicit constructors.</span></div>
<div class="line"><a id="l00842" name="l00842"></a><span class="lineno">  842</span>  <span class="keyword">template</span> &lt;<span class="keyword">class</span> MatcheeStringType&gt;</div>
<div class="line"><a id="l00843" name="l00843"></a><span class="lineno">  843</span>  <span class="keywordtype">bool</span> MatchAndExplain(<span class="keyword">const</span> MatcheeStringType&amp; s,</div>
<div class="line"><a id="l00844" name="l00844"></a><span class="lineno">  844</span>                       MatchResultListener* <span class="comment">/* listener */</span>)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00845" name="l00845"></a><span class="lineno">  845</span>    <span class="keyword">const</span> std::string s2(s);</div>
<div class="line"><a id="l00846" name="l00846"></a><span class="lineno">  846</span>    <span class="keywordflow">return</span> full_match_ ? RE::FullMatch(s2, *regex_)</div>
<div class="line"><a id="l00847" name="l00847"></a><span class="lineno">  847</span>                       : RE::PartialMatch(s2, *regex_);</div>
<div class="line"><a id="l00848" name="l00848"></a><span class="lineno">  848</span>  }</div>
<div class="line"><a id="l00849" name="l00849"></a><span class="lineno">  849</span> </div>
<div class="line"><a id="l00850" name="l00850"></a><span class="lineno">  850</span>  <span class="keywordtype">void</span> DescribeTo(::std::ostream* os)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00851" name="l00851"></a><span class="lineno">  851</span>    *os &lt;&lt; (full_match_ ? <span class="stringliteral">&quot;matches&quot;</span> : <span class="stringliteral">&quot;contains&quot;</span>) &lt;&lt; <span class="stringliteral">&quot; regular expression &quot;</span>;</div>
<div class="line"><a id="l00852" name="l00852"></a><span class="lineno">  852</span>    UniversalPrinter&lt;std::string&gt;::Print(regex_-&gt;pattern(), os);</div>
<div class="line"><a id="l00853" name="l00853"></a><span class="lineno">  853</span>  }</div>
<div class="line"><a id="l00854" name="l00854"></a><span class="lineno">  854</span> </div>
<div class="line"><a id="l00855" name="l00855"></a><span class="lineno">  855</span>  <span class="keywordtype">void</span> DescribeNegationTo(::std::ostream* os)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00856" name="l00856"></a><span class="lineno">  856</span>    *os &lt;&lt; <span class="stringliteral">&quot;doesn&#39;t &quot;</span> &lt;&lt; (full_match_ ? <span class="stringliteral">&quot;match&quot;</span> : <span class="stringliteral">&quot;contain&quot;</span>)</div>
<div class="line"><a id="l00857" name="l00857"></a><span class="lineno">  857</span>        &lt;&lt; <span class="stringliteral">&quot; regular expression &quot;</span>;</div>
<div class="line"><a id="l00858" name="l00858"></a><span class="lineno">  858</span>    UniversalPrinter&lt;std::string&gt;::Print(regex_-&gt;pattern(), os);</div>
<div class="line"><a id="l00859" name="l00859"></a><span class="lineno">  859</span>  }</div>
<div class="line"><a id="l00860" name="l00860"></a><span class="lineno">  860</span> </div>
<div class="line"><a id="l00861" name="l00861"></a><span class="lineno">  861</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00862" name="l00862"></a><span class="lineno">  862</span>  <span class="keyword">const</span> std::shared_ptr&lt;const RE&gt; regex_;</div>
<div class="line"><a id="l00863" name="l00863"></a><span class="lineno">  863</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> full_match_;</div>
<div class="line"><a id="l00864" name="l00864"></a><span class="lineno">  864</span>};</div>
<div class="line"><a id="l00865" name="l00865"></a><span class="lineno">  865</span>}  <span class="comment">// namespace internal</span></div>
<div class="line"><a id="l00866" name="l00866"></a><span class="lineno">  866</span> </div>
<div class="line"><a id="l00867" name="l00867"></a><span class="lineno">  867</span><span class="comment">// Matches a string that fully matches regular expression &#39;regex&#39;.</span></div>
<div class="line"><a id="l00868" name="l00868"></a><span class="lineno">  868</span><span class="comment">// The matcher takes ownership of &#39;regex&#39;.</span></div>
<div class="line"><a id="l00869" name="l00869"></a><span class="lineno">  869</span><span class="keyword">inline</span> PolymorphicMatcher&lt;internal::MatchesRegexMatcher&gt; MatchesRegex(</div>
<div class="line"><a id="l00870" name="l00870"></a><span class="lineno">  870</span>    <span class="keyword">const</span> internal::RE* regex) {</div>
<div class="line"><a id="l00871" name="l00871"></a><span class="lineno">  871</span>  <span class="keywordflow">return</span> MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, <span class="keyword">true</span>));</div>
<div class="line"><a id="l00872" name="l00872"></a><span class="lineno">  872</span>}</div>
<div class="line"><a id="l00873" name="l00873"></a><span class="lineno">  873</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T = std::<span class="keywordtype">string</span>&gt;</div>
<div class="line"><a id="l00874" name="l00874"></a><span class="lineno">  874</span>PolymorphicMatcher&lt;internal::MatchesRegexMatcher&gt; MatchesRegex(</div>
<div class="line"><a id="l00875" name="l00875"></a><span class="lineno">  875</span>    <span class="keyword">const</span> internal::StringLike&lt;T&gt;&amp; regex) {</div>
<div class="line"><a id="l00876" name="l00876"></a><span class="lineno">  876</span>  <span class="keywordflow">return</span> MatchesRegex(<span class="keyword">new</span> internal::RE(std::string(regex)));</div>
<div class="line"><a id="l00877" name="l00877"></a><span class="lineno">  877</span>}</div>
<div class="line"><a id="l00878" name="l00878"></a><span class="lineno">  878</span> </div>
<div class="line"><a id="l00879" name="l00879"></a><span class="lineno">  879</span><span class="comment">// Matches a string that contains regular expression &#39;regex&#39;.</span></div>
<div class="line"><a id="l00880" name="l00880"></a><span class="lineno">  880</span><span class="comment">// The matcher takes ownership of &#39;regex&#39;.</span></div>
<div class="line"><a id="l00881" name="l00881"></a><span class="lineno">  881</span><span class="keyword">inline</span> PolymorphicMatcher&lt;internal::MatchesRegexMatcher&gt; ContainsRegex(</div>
<div class="line"><a id="l00882" name="l00882"></a><span class="lineno">  882</span>    <span class="keyword">const</span> internal::RE* regex) {</div>
<div class="line"><a id="l00883" name="l00883"></a><span class="lineno">  883</span>  <span class="keywordflow">return</span> MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, <span class="keyword">false</span>));</div>
<div class="line"><a id="l00884" name="l00884"></a><span class="lineno">  884</span>}</div>
<div class="line"><a id="l00885" name="l00885"></a><span class="lineno">  885</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T = std::<span class="keywordtype">string</span>&gt;</div>
<div class="line"><a id="l00886" name="l00886"></a><span class="lineno">  886</span>PolymorphicMatcher&lt;internal::MatchesRegexMatcher&gt; ContainsRegex(</div>
<div class="line"><a id="l00887" name="l00887"></a><span class="lineno">  887</span>    <span class="keyword">const</span> internal::StringLike&lt;T&gt;&amp; regex) {</div>
<div class="line"><a id="l00888" name="l00888"></a><span class="lineno">  888</span>  <span class="keywordflow">return</span> ContainsRegex(<span class="keyword">new</span> internal::RE(std::string(regex)));</div>
<div class="line"><a id="l00889" name="l00889"></a><span class="lineno">  889</span>}</div>
<div class="line"><a id="l00890" name="l00890"></a><span class="lineno">  890</span> </div>
<div class="line"><a id="l00891" name="l00891"></a><span class="lineno">  891</span><span class="comment">// Creates a polymorphic matcher that matches anything equal to x.</span></div>
<div class="line"><a id="l00892" name="l00892"></a><span class="lineno">  892</span><span class="comment">// Note: if the parameter of Eq() were declared as const T&amp;, Eq(&quot;foo&quot;)</span></div>
<div class="line"><a id="l00893" name="l00893"></a><span class="lineno">  893</span><span class="comment">// wouldn&#39;t compile.</span></div>
<div class="line"><a id="l00894" name="l00894"></a><span class="lineno">  894</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00895" name="l00895"></a><span class="lineno">  895</span><span class="keyword">inline</span> internal::EqMatcher&lt;T&gt; Eq(T x) {</div>
<div class="line"><a id="l00896" name="l00896"></a><span class="lineno">  896</span>  <span class="keywordflow">return</span> internal::EqMatcher&lt;T&gt;(x);</div>
<div class="line"><a id="l00897" name="l00897"></a><span class="lineno">  897</span>}</div>
<div class="line"><a id="l00898" name="l00898"></a><span class="lineno">  898</span> </div>
<div class="line"><a id="l00899" name="l00899"></a><span class="lineno">  899</span><span class="comment">// Constructs a Matcher&lt;T&gt; from a &#39;value&#39; of type T.  The constructed</span></div>
<div class="line"><a id="l00900" name="l00900"></a><span class="lineno">  900</span><span class="comment">// matcher matches any value that&#39;s equal to &#39;value&#39;.</span></div>
<div class="line"><a id="l00901" name="l00901"></a><span class="lineno">  901</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00902" name="l00902"></a><span class="lineno">  902</span>Matcher&lt;T&gt;::Matcher(T value) {</div>
<div class="line"><a id="l00903" name="l00903"></a><span class="lineno">  903</span>  *<span class="keyword">this</span> = Eq(value);</div>
<div class="line"><a id="l00904" name="l00904"></a><span class="lineno">  904</span>}</div>
<div class="line"><a id="l00905" name="l00905"></a><span class="lineno">  905</span> </div>
<div class="line"><a id="l00906" name="l00906"></a><span class="lineno">  906</span><span class="comment">// Creates a monomorphic matcher that matches anything with type Lhs</span></div>
<div class="line"><a id="l00907" name="l00907"></a><span class="lineno">  907</span><span class="comment">// and equal to rhs.  A user may need to use this instead of Eq(...)</span></div>
<div class="line"><a id="l00908" name="l00908"></a><span class="lineno">  908</span><span class="comment">// in order to resolve an overloading ambiguity.</span></div>
<div class="line"><a id="l00909" name="l00909"></a><span class="lineno">  909</span><span class="comment">//</span></div>
<div class="line"><a id="l00910" name="l00910"></a><span class="lineno">  910</span><span class="comment">// TypedEq&lt;T&gt;(x) is just a convenient short-hand for Matcher&lt;T&gt;(Eq(x))</span></div>
<div class="line"><a id="l00911" name="l00911"></a><span class="lineno">  911</span><span class="comment">// or Matcher&lt;T&gt;(x), but more readable than the latter.</span></div>
<div class="line"><a id="l00912" name="l00912"></a><span class="lineno">  912</span><span class="comment">//</span></div>
<div class="line"><a id="l00913" name="l00913"></a><span class="lineno">  913</span><span class="comment">// We could define similar monomorphic matchers for other comparison</span></div>
<div class="line"><a id="l00914" name="l00914"></a><span class="lineno">  914</span><span class="comment">// operations (e.g. TypedLt, TypedGe, and etc), but decided not to do</span></div>
<div class="line"><a id="l00915" name="l00915"></a><span class="lineno">  915</span><span class="comment">// it yet as those are used much less than Eq() in practice.  A user</span></div>
<div class="line"><a id="l00916" name="l00916"></a><span class="lineno">  916</span><span class="comment">// can always write Matcher&lt;T&gt;(Lt(5)) to be explicit about the type,</span></div>
<div class="line"><a id="l00917" name="l00917"></a><span class="lineno">  917</span><span class="comment">// for example.</span></div>
<div class="line"><a id="l00918" name="l00918"></a><span class="lineno">  918</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Lhs, <span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00919" name="l00919"></a><span class="lineno">  919</span><span class="keyword">inline</span> Matcher&lt;Lhs&gt; TypedEq(<span class="keyword">const</span> Rhs&amp; rhs) {</div>
<div class="line"><a id="l00920" name="l00920"></a><span class="lineno">  920</span>  <span class="keywordflow">return</span> Eq(rhs);</div>
<div class="line"><a id="l00921" name="l00921"></a><span class="lineno">  921</span>}</div>
<div class="line"><a id="l00922" name="l00922"></a><span class="lineno">  922</span> </div>
<div class="line"><a id="l00923" name="l00923"></a><span class="lineno">  923</span><span class="comment">// Creates a polymorphic matcher that matches anything &gt;= x.</span></div>
<div class="line"><a id="l00924" name="l00924"></a><span class="lineno">  924</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00925" name="l00925"></a><span class="lineno">  925</span><span class="keyword">inline</span> internal::GeMatcher&lt;Rhs&gt; Ge(Rhs x) {</div>
<div class="line"><a id="l00926" name="l00926"></a><span class="lineno">  926</span>  <span class="keywordflow">return</span> internal::GeMatcher&lt;Rhs&gt;(x);</div>
<div class="line"><a id="l00927" name="l00927"></a><span class="lineno">  927</span>}</div>
<div class="line"><a id="l00928" name="l00928"></a><span class="lineno">  928</span> </div>
<div class="line"><a id="l00929" name="l00929"></a><span class="lineno">  929</span><span class="comment">// Creates a polymorphic matcher that matches anything &gt; x.</span></div>
<div class="line"><a id="l00930" name="l00930"></a><span class="lineno">  930</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00931" name="l00931"></a><span class="lineno">  931</span><span class="keyword">inline</span> internal::GtMatcher&lt;Rhs&gt; Gt(Rhs x) {</div>
<div class="line"><a id="l00932" name="l00932"></a><span class="lineno">  932</span>  <span class="keywordflow">return</span> internal::GtMatcher&lt;Rhs&gt;(x);</div>
<div class="line"><a id="l00933" name="l00933"></a><span class="lineno">  933</span>}</div>
<div class="line"><a id="l00934" name="l00934"></a><span class="lineno">  934</span> </div>
<div class="line"><a id="l00935" name="l00935"></a><span class="lineno">  935</span><span class="comment">// Creates a polymorphic matcher that matches anything &lt;= x.</span></div>
<div class="line"><a id="l00936" name="l00936"></a><span class="lineno">  936</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00937" name="l00937"></a><span class="lineno">  937</span><span class="keyword">inline</span> internal::LeMatcher&lt;Rhs&gt; Le(Rhs x) {</div>
<div class="line"><a id="l00938" name="l00938"></a><span class="lineno">  938</span>  <span class="keywordflow">return</span> internal::LeMatcher&lt;Rhs&gt;(x);</div>
<div class="line"><a id="l00939" name="l00939"></a><span class="lineno">  939</span>}</div>
<div class="line"><a id="l00940" name="l00940"></a><span class="lineno">  940</span> </div>
<div class="line"><a id="l00941" name="l00941"></a><span class="lineno">  941</span><span class="comment">// Creates a polymorphic matcher that matches anything &lt; x.</span></div>
<div class="line"><a id="l00942" name="l00942"></a><span class="lineno">  942</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00943" name="l00943"></a><span class="lineno">  943</span><span class="keyword">inline</span> internal::LtMatcher&lt;Rhs&gt; Lt(Rhs x) {</div>
<div class="line"><a id="l00944" name="l00944"></a><span class="lineno">  944</span>  <span class="keywordflow">return</span> internal::LtMatcher&lt;Rhs&gt;(x);</div>
<div class="line"><a id="l00945" name="l00945"></a><span class="lineno">  945</span>}</div>
<div class="line"><a id="l00946" name="l00946"></a><span class="lineno">  946</span> </div>
<div class="line"><a id="l00947" name="l00947"></a><span class="lineno">  947</span><span class="comment">// Creates a polymorphic matcher that matches anything != x.</span></div>
<div class="line"><a id="l00948" name="l00948"></a><span class="lineno">  948</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Rhs&gt;</div>
<div class="line"><a id="l00949" name="l00949"></a><span class="lineno">  949</span><span class="keyword">inline</span> internal::NeMatcher&lt;Rhs&gt; Ne(Rhs x) {</div>
<div class="line"><a id="l00950" name="l00950"></a><span class="lineno">  950</span>  <span class="keywordflow">return</span> internal::NeMatcher&lt;Rhs&gt;(x);</div>
<div class="line"><a id="l00951" name="l00951"></a><span class="lineno">  951</span>}</div>
<div class="line"><a id="l00952" name="l00952"></a><span class="lineno">  952</span>}  <span class="comment">// namespace testing</span></div>
<div class="line"><a id="l00953" name="l00953"></a><span class="lineno">  953</span> </div>
<div class="line"><a id="l00954" name="l00954"></a><span class="lineno">  954</span>GTEST_DISABLE_MSC_WARNINGS_POP_()  <span class="comment">//  4251 5046</span></div>
<div class="line"><a id="l00955" name="l00955"></a><span class="lineno">  955</span> </div>
<div class="line"><a id="l00956" name="l00956"></a><span class="lineno">  956</span><span class="preprocessor">#endif  </span><span class="comment">// GOOGLETEST_INCLUDE_GTEST_GTEST_MATCHERS_H_</span></div>
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